1、Designation:C52015Standard Test Methods forDensity of Granular Loose Fill Insulations1This standard is issued under the fixed designation C520;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in pare
2、ntheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 These test methods are applicable to granular loose fillinsulation m
3、aterials such as vermiculite and perlite.They areused for other insulation materials with similar flow andsettling properties.1.2 Method A shall be used to determine bulk density.1.3 Method B shall be used to determine design density and,with MethodA,is used to calculate percent loss of volume dueto
4、 settling.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns,if a
5、ny,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC390
6、Practice for Sampling and Acceptance of ThermalInsulation Lots3.Terminology3.1 The definitions of terms used in this method shall be inaccordance with Terminology C168.3.2 Definitions of Terms Specific to This Standard:3.2.1 bulk densitythe density of the granular material isdetermined in accordance
7、 with Method A.No conditioning isrequired unless specified.The density is determined for thematerial as received.The voids incorporated during the place-ment procedure are included.3.2.2 design densitythe density of the conditioned granu-lar material,determined in accordance with Method B.Thenormal
8、voids incorporated during the placement and subse-quent procedures are included.3.2.3 percent volume lossthe loss in volume between theas received bulk density and the design density determined byinduced settling procedures or specified conditioning,or both,expressed as a percent.4.Significance and
9、Use4.1 Method A will be used primarily as a manufacturingquality control and field test method without the need forconditioning.For more accurate research purposes,condition-ing shall be specified.4.2 Method B will be used,when specified,to determine thedensity at which insulation properties such as
10、 thermal resis-tance and placement coverage are to be determined.5.Apparatus5.1 Bulk Density ContainerA lightweight rigid box withinterior length,width,and depth of 12.0 6 0.1 in.(3.05 6 3mm).Scales or balances with an accuracy of at least 1%of thespecimen weight shall be used.5.2 Design Density Sam
11、ple ContainerThe specimen con-tainer shall be made of nominal12in.(13 mm)thick construc-tion grade plywood and two 48-in.(1220 mm)long sections of,nominal 2 by 8-in.(51 by 203 mm)lumber.The 2 by 8 sectionsof wood and plywood shall be used to provide inside containerdimensions of 14.5 6 0.1 in.(368 6
12、 3 mm)by 48 6 0.1in.(1.22 m 6 0.003 m)by 7.5 6 0.1 in.(191 mm 6 3 mm).The inside dimensions of the specimen container shall be usedto calculate the volume of the container.5.3 ScreedA suitable piece of wood,metal,or plastic atleast 20 in.(508 mm)long with a thin straight edge suitable forleveling th
13、e loose,granular material.5.4 Tapping Hammer and FrameThis shall include astandard 712-lb(3.4 kg)sledge hammer.The total length of thehandle shall be approximately 34 in.(864 mm).A14-in.1These test methods are under the jurisdiction of ASTM Committee C16 onThermal Insulation and are the direct respo
14、nsibility of Subcommittee C16.32 onMechanical Properties.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 1963.Last previous edition approved in 2010 as C520 04(2010).DOI:10.1520/C0520-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact AST
15、M Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1(6-mm)hole is drilled through the han
16、dle to provide a pivotpoint 3218618in.(816 mm 6 3 mm)from the center line ofthe head of the hammer.The tapping hammer shall be mountedin a moveable frame as shown in Fig.1.5.5 Blowing Machine,OptionalA blowing machine,ifused,shall be typical of the type of blowing machine recom-mended by the insulation manufacturer and shall be equippedwith 100 ft.(30 m)of the type and diameter of blower hoserecommended by the insulation manufacturer for field instal-lation.6.Sampling6.1 For the purposes of stan
